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3

1) Prepare a plastic bucket. Pull out 

the cap, salt water hose and filter 

from the salt water tank, and put 

them into the bucket.

2) Use the measuring cup (accessory) 

to add one level cup (approx. 

700ml) of sodium chloride (NaCl) 

or potassium chloride (KCl) into 

the salt water tank.

Cap

Salt Water 

Hose

Salt Water 

Tank

Measuring 

Cup

Salt

Cap

Shake well

Stopper

3) Add water into the salt water tank 

up to the 5 L line.

4) Check that the mini cap is closed, 

and put the cap on the salt water 

tank. Shake it until sodium chloride 

or potassium chloride completely 

dissolves in the water.

5) Open the mini cap and put it in the 

recess, and push in the salt water 

hose until the stopper hits the cap.

3. PURGING SALT WATER PUMP

This unit uses a pump to supply salt water. If the salt water pump 

contains air, electrolyzed water cannot be dispensed properly. When 

the unit is installed for the first time, when the add salt water lamp on 

the operation panel comes on, or if the error lamp on the operation 

panel comes on and the display on the control panel shows error code 

“E53”, purge air from the salt water pump as follows:

1) Check that there is enough salt water in the salt water tank.

2) Open the door and check that the power switch (earth leakage 

circuit breaker) is off. Turn it off if it is on.

3) Turn the power switch back on.

[b] SUPPLYING SALT WATER

CAUTION

Use sodium chloride (NaCl) or potassium chloride (KCl) of not 

less than 99% of purity. Use of any other salt may cause failure, 

clogged pipes or health problems.

Display Select Button

4) Press the display select button 

on the control panel and hold it 

down.

5) The pump starts running and 

pumping up the salt water to 

purge the salt water hose. It 

takes about 20 seconds to purge 

a 1.5 m long hose. The sound of 

the pump changes from high to 

low when the air is removed.

6) Release the display select button when the air is purged.

* Always locate the salt water tank below the end of the water outlets, 

or the salt water tank will leak salt water by siphonage and the unit 

may fail to operate properly.

4. START UP

1) Plug in the unit.

2) Open the water supply line shut-off valve.

3) Check for proper operation of the water softener. Refer to the 

instruction manual provided for operating instructions. See “8. 

[f] WATER HARDNESS (WEEKLY)” for how to check for water 

softening.

4) Check that the salt water tank is properly set up.

5) Turn on the power switch (earth leakage circuit breaker). A 

mechanical sound is heard three times immediately after the power 

switch is turned on. This is not a sign of failure.

6) Press the dispense button on the operation panel.

7) The operation lamp comes on.

8) The ready lamp starts flashing, and non-electrolyzed water is 

dispensed at first.

9) When the unit starts to dispense electrolyzed water of the intended 

quality, the ready lamp stays on continuously.

10) Check that the add salt water lamp is off. If it is on, follow “3. 

PURGING SALT WATER PUMP” to supply salt water to the 

electrolytic cell until the lamp goes off.

11) To stop dispensing water, press the dispense button on the 

operation panel again. The ready lamp goes off. The unit goes 

through the flush cycle before water stops.

* While  the  ready  lamp  is  flashing,  the  quality  of  electrolyzed  water 

has not reached the intended level. If the available chlorine 

concentration and pH value are less than the specified values, 

sanitizing water may not provide a sufficient bactericidal effect.

* Before using electrolyzed water, check that the ready lamp stays on.

5. SHUT DOWN

1) For daily shutdown, press the dispense button on the operation 

panel. The  ready  lamp  flashes  for  about  3  seconds  and  the  unit 

stops dispensing electrolyzed water. To restart the unit, press the 

dispense button on the operation panel.

2) For long storage, see “9. PREPARING ELECTROLYZER FOR 

LONG STORAGE”.

6. WATER FAILURE

In case of water failure, follow the instructions below:

1) Shut down the unit according to “5. SHUT DOWN”.

2) Wait until water supply is resumed.

3) Check that the water supply valve is closed.

4) Open the drain valve.

5) Open the water supply line shut-off valve. Drain water until no rusty 

water comes out.

6) Close the drain valve.

7) Start up the unit according to “4. START UP”.

Summary of Contents for ROX-20TB2-EW

Page 1: ...ROX 20TB2 EW L1X002114 032017 WATER ELECTROLYZER FOR END USER INSTRUCTION MANUAL 3 16 Minamiyakata Sakae Toyoake Aichi 470 1194 Japan...

Page 2: ...th acidic or chlorine based chemicals can cause chlorine gas resulting in health problems 5 Do not use a large volume of sanitizing water only Generation of a large amount of chlorine gas may cause he...

Page 3: ...ter outlet Discharges electrolyzed water 6 Add salt water lamp red Indicates that the salt water tank level is too low Flashes when the error lamp on the operation panel lights up 7 Ready lamp green F...

Page 4: ...by siphonage and the unit may fail to operate properly 4 START UP 1 Plug in the unit 2 Open the water supply line shut off valve 3 Check for proper operation of the water softener Refer to the instru...

Page 5: ...er pipe with scale for a long period of time may prevent the flow of cleaning water stop the unit or cause poor performance To prevent scale from accumulating flush the cleaning water pipe periodicall...

Page 6: ...may cause clogged pipes reduction in performance or failure of the electrolytic cell If sampled water is hard contact an authorized Hoshizaki service company 1 Open the water sampling tap Let water ru...

Page 7: ...Drain salt water from the salt water tank and rinse the inside the salt water tank to remove salt completely with tap water 4 Fill the salt water tank with tap water and connect the salt water hose 5...

Page 8: ...tion Salt water level Neutralizing agent level Water hardness Water leaks around unit Water leaks from water circuit Cell run time Checked by Sanitizing water only Date Time pH Sanitizing water Cleani...

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